4 Lug vs 5 Lug
So I have a 1965 Mustang that currently has a 200 ci straight six in it. I am converting the drums to a disc brake setup and eventually swapping in a 289. How much of a performance difference will it have on my car if I stick with the 4 lug 6 cylinder wheels and not upgrade to 5 lug V8 wheels. I am looking to save a little money and not have to change the rear axle shafts and whatnot.